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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef _IDE_H
2#define _IDE_H
3/*
4 * linux/include/linux/ide.h
5 *
6 * Copyright (C) 1994-2002 Linus Torvalds & authors
7 */
8
Linus Torvalds1da177e2005-04-16 15:20:36 -07009#include <linux/init.h>
10#include <linux/ioport.h>
11#include <linux/hdreg.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070012#include <linux/blkdev.h>
13#include <linux/proc_fs.h>
14#include <linux/interrupt.h>
15#include <linux/bitops.h>
16#include <linux/bio.h>
17#include <linux/device.h>
18#include <linux/pci.h>
Aleksey Makarovf36d4022006-01-09 15:59:27 -080019#include <linux/completion.h>
Hannes Reineckee3a59b42007-02-07 18:19:37 +010020#ifdef CONFIG_BLK_DEV_IDEACPI
21#include <acpi/acpi.h>
22#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070023#include <asm/byteorder.h>
24#include <asm/system.h>
25#include <asm/io.h>
26#include <asm/semaphore.h>
Matthias Kaehlckef9383c42007-07-09 23:17:56 +020027#include <asm/mutex.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070028
Bartlomiej Zolnierkiewicz729d4de2008-03-29 19:55:17 +010029#if defined(CONFIG_CRIS) || defined(CONFIG_FRV)
Bartlomiej Zolnierkiewicz4ee06b72008-01-25 22:17:08 +010030# define SUPPORT_VLB_SYNC 0
31#else
32# define SUPPORT_VLB_SYNC 1
Linus Torvalds1da177e2005-04-16 15:20:36 -070033#endif
34
35/*
36 * Used to indicate "no IRQ", should be a value that cannot be an IRQ
37 * number.
38 */
39
40#define IDE_NO_IRQ (-1)
41
Linus Torvalds1da177e2005-04-16 15:20:36 -070042typedef unsigned char byte; /* used everywhere */
43
44/*
45 * Probably not wise to fiddle with these
46 */
47#define ERROR_MAX 8 /* Max read/write errors per sector */
48#define ERROR_RESET 3 /* Reset controller every 4th retry */
49#define ERROR_RECAL 1 /* Recalibrate every 2nd retry */
50
51/*
52 * Tune flags
53 */
54#define IDE_TUNE_NOAUTO 2
55#define IDE_TUNE_AUTO 1
56#define IDE_TUNE_DEFAULT 0
57
58/*
59 * state flags
60 */
61
62#define DMA_PIO_RETRY 1 /* retrying in PIO */
63
64#define HWIF(drive) ((ide_hwif_t *)((drive)->hwif))
65#define HWGROUP(drive) ((ide_hwgroup_t *)(HWIF(drive)->hwgroup))
66
67/*
68 * Definitions for accessing IDE controller registers
69 */
70#define IDE_NR_PORTS (10)
71
72#define IDE_DATA_OFFSET (0)
73#define IDE_ERROR_OFFSET (1)
74#define IDE_NSECTOR_OFFSET (2)
75#define IDE_SECTOR_OFFSET (3)
76#define IDE_LCYL_OFFSET (4)
77#define IDE_HCYL_OFFSET (5)
78#define IDE_SELECT_OFFSET (6)
79#define IDE_STATUS_OFFSET (7)
80#define IDE_CONTROL_OFFSET (8)
81#define IDE_IRQ_OFFSET (9)
82
83#define IDE_FEATURE_OFFSET IDE_ERROR_OFFSET
84#define IDE_COMMAND_OFFSET IDE_STATUS_OFFSET
Bartlomiej Zolnierkiewicz23579a22008-04-18 00:46:26 +020085#define IDE_ALTSTATUS_OFFSET IDE_CONTROL_OFFSET
86#define IDE_IREASON_OFFSET IDE_NSECTOR_OFFSET
87#define IDE_BCOUNTL_OFFSET IDE_LCYL_OFFSET
88#define IDE_BCOUNTH_OFFSET IDE_HCYL_OFFSET
Linus Torvalds1da177e2005-04-16 15:20:36 -070089
90#define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
91#define BAD_R_STAT (BUSY_STAT | ERR_STAT)
92#define BAD_W_STAT (BAD_R_STAT | WRERR_STAT)
93#define BAD_STAT (BAD_R_STAT | DRQ_STAT)
94#define DRIVE_READY (READY_STAT | SEEK_STAT)
Linus Torvalds1da177e2005-04-16 15:20:36 -070095
96#define BAD_CRC (ABRT_ERR | ICRC_ERR)
97
98#define SATA_NR_PORTS (3) /* 16 possible ?? */
99
100#define SATA_STATUS_OFFSET (0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101#define SATA_ERROR_OFFSET (1)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700102#define SATA_CONTROL_OFFSET (2)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103
Linus Torvalds1da177e2005-04-16 15:20:36 -0700104/*
105 * Our Physical Region Descriptor (PRD) table should be large enough
106 * to handle the biggest I/O request we are likely to see. Since requests
107 * can have no more than 256 sectors, and since the typical blocksize is
108 * two or more sectors, we could get by with a limit of 128 entries here for
109 * the usual worst case. Most requests seem to include some contiguous blocks,
110 * further reducing the number of table entries required.
111 *
112 * The driver reverts to PIO mode for individual requests that exceed
113 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
114 * 100% of all crazy scenarios here is not necessary.
115 *
116 * As it turns out though, we must allocate a full 4KB page for this,
117 * so the two PRD tables (ide0 & ide1) will each get half of that,
118 * allowing each to have about 256 entries (8 bytes each) from this.
119 */
120#define PRD_BYTES 8
121#define PRD_ENTRIES 256
122
123/*
124 * Some more useful definitions
125 */
126#define PARTN_BITS 6 /* number of minor dev bits for partitions */
127#define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
128#define SECTOR_SIZE 512
129#define SECTOR_WORDS (SECTOR_SIZE / 4) /* number of 32bit words per sector */
130#define IDE_LARGE_SEEK(b1,b2,t) (((b1) > (b2) + (t)) || ((b2) > (b1) + (t)))
131
132/*
133 * Timeouts for various operations:
134 */
135#define WAIT_DRQ (HZ/10) /* 100msec - spec allows up to 20ms */
136#define WAIT_READY (5*HZ) /* 5sec - some laptops are very slow */
137#define WAIT_PIDENTIFY (10*HZ) /* 10sec - should be less than 3ms (?), if all ATAPI CD is closed at boot */
138#define WAIT_WORSTCASE (30*HZ) /* 30sec - worst case when spinning up */
139#define WAIT_CMD (10*HZ) /* 10sec - maximum wait for an IRQ to happen */
140#define WAIT_MIN_SLEEP (2*HZ/100) /* 20msec - minimum sleep time */
141
Linus Torvalds1da177e2005-04-16 15:20:36 -0700142/*
143 * Check for an interrupt and acknowledge the interrupt status
144 */
145struct hwif_s;
146typedef int (ide_ack_intr_t)(struct hwif_s *);
147
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148/*
149 * hwif_chipset_t is used to keep track of the specific hardware
150 * chipset used by each IDE interface, if known.
151 */
Bartlomiej Zolnierkiewicz528a5722007-10-20 00:32:30 +0200152enum { ide_unknown, ide_generic, ide_pci,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153 ide_cmd640, ide_dtc2278, ide_ali14xx,
154 ide_qd65xx, ide_umc8672, ide_ht6560b,
155 ide_rz1000, ide_trm290,
156 ide_cmd646, ide_cy82c693, ide_4drives,
157 ide_pmac, ide_etrax100, ide_acorn,
Bartlomiej Zolnierkiewicz9a0e77f2008-04-18 00:46:24 +0200158 ide_au1xxx, ide_palm3710
Bartlomiej Zolnierkiewicz528a5722007-10-20 00:32:30 +0200159};
160
161typedef u8 hwif_chipset_t;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162
163/*
164 * Structure to hold all information about the location of this port
165 */
166typedef struct hw_regs_s {
167 unsigned long io_ports[IDE_NR_PORTS]; /* task file registers */
168 int irq; /* our irq number */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169 ide_ack_intr_t *ack_intr; /* acknowledge interrupt */
170 hwif_chipset_t chipset;
Hannes Reinecke4349d5c2005-11-09 22:47:18 +0100171 struct device *dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700172} hw_regs_t;
173
Bartlomiej Zolnierkiewiczbaa8f3e2007-10-20 00:32:31 +0200174struct hwif_s * ide_find_port(unsigned long);
Bartlomiej Zolnierkiewiczcbb010c2008-01-26 20:13:06 +0100175void ide_init_port_data(struct hwif_s *, unsigned int);
Bartlomiej Zolnierkiewicz57c802e2008-01-26 20:13:05 +0100176void ide_init_port_hw(struct hwif_s *, hw_regs_t *);
Bartlomiej Zolnierkiewiczbaa8f3e2007-10-20 00:32:31 +0200177
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178static inline void ide_std_init_ports(hw_regs_t *hw,
179 unsigned long io_addr,
180 unsigned long ctl_addr)
181{
182 unsigned int i;
183
184 for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++)
185 hw->io_ports[i] = io_addr++;
186
187 hw->io_ports[IDE_CONTROL_OFFSET] = ctl_addr;
188}
189
190#include <asm/ide.h>
191
Matt Mackall83d7dbc2006-10-03 01:14:16 -0700192#if !defined(MAX_HWIFS) || defined(CONFIG_EMBEDDED)
193#undef MAX_HWIFS
Bjorn Helgaas83ae20c2005-11-09 22:58:07 +0100194#define MAX_HWIFS CONFIG_IDE_MAX_HWIFS
195#endif
196
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197/* needed on alpha, x86/x86_64, ia64, mips, ppc32 and sh */
198#ifndef IDE_ARCH_OBSOLETE_DEFAULTS
199# define ide_default_io_base(index) (0)
200# define ide_default_irq(base) (0)
201# define ide_init_default_irq(base) (0)
202#endif
203
Linus Torvalds1da177e2005-04-16 15:20:36 -0700204/* Currently only m68k, apus and m8xx need it */
205#ifndef IDE_ARCH_ACK_INTR
206# define ide_ack_intr(hwif) (1)
207#endif
208
209/* Currently only Atari needs it */
210#ifndef IDE_ARCH_LOCK
211# define ide_release_lock() do {} while (0)
212# define ide_get_lock(hdlr, data) do {} while (0)
213#endif /* IDE_ARCH_LOCK */
214
215/*
216 * Now for the data we need to maintain per-drive: ide_drive_t
217 */
218
219#define ide_scsi 0x21
220#define ide_disk 0x20
221#define ide_optical 0x7
222#define ide_cdrom 0x5
223#define ide_tape 0x1
224#define ide_floppy 0x0
225
226/*
227 * Special Driver Flags
228 *
229 * set_geometry : respecify drive geometry
230 * recalibrate : seek to cyl 0
231 * set_multmode : set multmode count
232 * set_tune : tune interface for drive
233 * serviced : service command
234 * reserved : unused
235 */
236typedef union {
237 unsigned all : 8;
238 struct {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700239 unsigned set_geometry : 1;
240 unsigned recalibrate : 1;
241 unsigned set_multmode : 1;
242 unsigned set_tune : 1;
243 unsigned serviced : 1;
244 unsigned reserved : 3;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700245 } b;
246} special_t;
247
248/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700249 * ATA-IDE Select Register, aka Device-Head
250 *
251 * head : always zeros here
252 * unit : drive select number: 0/1
253 * bit5 : always 1
254 * lba : using LBA instead of CHS
255 * bit7 : always 1
256 */
257typedef union {
258 unsigned all : 8;
259 struct {
260#if defined(__LITTLE_ENDIAN_BITFIELD)
261 unsigned head : 4;
262 unsigned unit : 1;
263 unsigned bit5 : 1;
264 unsigned lba : 1;
265 unsigned bit7 : 1;
266#elif defined(__BIG_ENDIAN_BITFIELD)
267 unsigned bit7 : 1;
268 unsigned lba : 1;
269 unsigned bit5 : 1;
270 unsigned unit : 1;
271 unsigned head : 4;
272#else
273#error "Please fix <asm/byteorder.h>"
274#endif
275 } b;
276} select_t, ata_select_t;
277
278/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700279 * Status returned from various ide_ functions
280 */
281typedef enum {
282 ide_stopped, /* no drive operation was started */
283 ide_started, /* a drive operation was started, handler was set */
284} ide_startstop_t;
285
286struct ide_driver_s;
287struct ide_settings_s;
288
Hannes Reineckee3a59b42007-02-07 18:19:37 +0100289#ifdef CONFIG_BLK_DEV_IDEACPI
290struct ide_acpi_drive_link;
291struct ide_acpi_hwif_link;
292#endif
293
Linus Torvalds1da177e2005-04-16 15:20:36 -0700294typedef struct ide_drive_s {
295 char name[4]; /* drive name, such as "hda" */
296 char driver_req[10]; /* requests specific driver */
297
Jens Axboe165125e2007-07-24 09:28:11 +0200298 struct request_queue *queue; /* request queue */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299
300 struct request *rq; /* current request */
301 struct ide_drive_s *next; /* circular list of hwgroup drives */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700302 void *driver_data; /* extra driver data */
303 struct hd_driveid *id; /* drive model identification info */
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200304#ifdef CONFIG_IDE_PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700305 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
306 struct ide_settings_s *settings;/* /proc/ide/ drive settings */
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200307#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700308 struct hwif_s *hwif; /* actually (ide_hwif_t *) */
309
310 unsigned long sleep; /* sleep until this time */
311 unsigned long service_start; /* time we started last request */
312 unsigned long service_time; /* service time of last request */
313 unsigned long timeout; /* max time to wait for irq */
314
315 special_t special; /* special action flags */
316 select_t select; /* basic drive/head select reg value */
317
318 u8 keep_settings; /* restore settings after drive reset */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700319 u8 using_dma; /* disk is using dma for read/write */
320 u8 retry_pio; /* retrying dma capable host in pio */
321 u8 state; /* retry state */
322 u8 waiting_for_dma; /* dma currently in progress */
323 u8 unmask; /* okay to unmask other irqs */
Jens Axboe36193482006-07-28 08:54:59 +0200324 u8 noflush; /* don't attempt flushes */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700325 u8 dsc_overlap; /* DSC overlap */
326 u8 nice1; /* give potential excess bandwidth */
327
328 unsigned present : 1; /* drive is physically present */
329 unsigned dead : 1; /* device ejected hint */
330 unsigned id_read : 1; /* 1=id read from disk 0 = synthetic */
331 unsigned noprobe : 1; /* from: hdx=noprobe */
332 unsigned removable : 1; /* 1 if need to do check_media_change */
333 unsigned attach : 1; /* needed for removable devices */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700334 unsigned forced_geom : 1; /* 1 if hdx=c,h,s was given at boot */
335 unsigned no_unmask : 1; /* disallow setting unmask bit */
336 unsigned no_io_32bit : 1; /* disallow enabling 32bit I/O */
337 unsigned atapi_overlap : 1; /* ATAPI overlap (not supported) */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700338 unsigned doorlocking : 1; /* for removable only: door lock/unlock works */
Bartlomiej Zolnierkiewiczc2237012007-10-16 22:29:58 +0200339 unsigned nodma : 1; /* disallow DMA */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340 unsigned autotune : 2; /* 0=default, 1=autotune, 2=noautotune */
341 unsigned remap_0_to_1 : 1; /* 0=noremap, 1=remap 0->1 (for EZDrive) */
342 unsigned blocked : 1; /* 1=powermanagment told us not to do anything, so sleep nicely */
343 unsigned vdma : 1; /* 1=doing PIO over DMA 0=doing normal DMA */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700344 unsigned scsi : 1; /* 0=default, 1=ide-scsi emulation */
345 unsigned sleeping : 1; /* 1=sleeping & sleep field valid */
346 unsigned post_reset : 1;
Bartlomiej Zolnierkiewicz7f8f48a2007-05-10 00:01:10 +0200347 unsigned udma33_warned : 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700348
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +0200349 u8 addressing; /* 0=28-bit, 1=48-bit, 2=48-bit doing 28-bit */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700350 u8 quirk_list; /* considered quirky, set for a specific host */
351 u8 init_speed; /* transfer rate set at boot */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700352 u8 current_speed; /* current transfer rate set */
Suleiman Souhlal513daad2007-03-26 23:03:20 +0200353 u8 desired_speed; /* desired transfer rate set */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700354 u8 dn; /* now wide spread use */
355 u8 wcache; /* status of write cache */
356 u8 acoustic; /* acoustic management */
357 u8 media; /* disk, cdrom, tape, floppy, ... */
Bartlomiej Zolnierkiewicz23579a22008-04-18 00:46:26 +0200358 u8 ctl; /* "normal" value for Control register */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359 u8 ready_stat; /* min status value for drive ready */
360 u8 mult_count; /* current multiple sector setting */
361 u8 mult_req; /* requested multiple sector setting */
362 u8 tune_req; /* requested drive tuning setting */
363 u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
364 u8 bad_wstat; /* used for ignoring WRERR_STAT */
365 u8 nowerr; /* used for ignoring WRERR_STAT */
366 u8 sect0; /* offset of first sector for DM6:DDO */
367 u8 head; /* "real" number of heads */
368 u8 sect; /* "real" sectors per track */
369 u8 bios_head; /* BIOS/fdisk/LILO number of heads */
370 u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */
371
372 unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
373 unsigned int cyl; /* "real" number of cyls */
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +0200374 unsigned int drive_data; /* used by set_pio_mode/selectproc */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700375 unsigned int failures; /* current failure count */
376 unsigned int max_failures; /* maximum allowed failure count */
Alan Coxdbe217a2006-06-25 05:47:44 -0700377 u64 probed_capacity;/* initial reported media capacity (ide-cd only currently) */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378
379 u64 capacity64; /* total number of sectors */
380
381 int lun; /* logical unit */
382 int crc_count; /* crc counter to reduce drive speed */
Hannes Reineckee3a59b42007-02-07 18:19:37 +0100383#ifdef CONFIG_BLK_DEV_IDEACPI
384 struct ide_acpi_drive_link *acpidata;
385#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700386 struct list_head list;
387 struct device gendev;
Aleksey Makarovf36d4022006-01-09 15:59:27 -0800388 struct completion gendev_rel_comp; /* to deal with device release() */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389} ide_drive_t;
390
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +0200391#define to_ide_device(dev)container_of(dev, ide_drive_t, gendev)
392
Linus Torvalds1da177e2005-04-16 15:20:36 -0700393#define IDE_CHIPSET_PCI_MASK \
394 ((1<<ide_pci)|(1<<ide_cmd646)|(1<<ide_ali14xx))
395#define IDE_CHIPSET_IS_PCI(c) ((IDE_CHIPSET_PCI_MASK >> (c)) & 1)
396
Bartlomiej Zolnierkiewicz039788e2007-10-20 00:32:34 +0200397struct ide_port_info;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700398
399typedef struct hwif_s {
400 struct hwif_s *next; /* for linked-list in ide_hwgroup_t */
401 struct hwif_s *mate; /* other hwif from same PCI chip */
402 struct hwgroup_s *hwgroup; /* actually (ide_hwgroup_t *) */
403 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
404
405 char name[6]; /* name of interface, eg. "ide0" */
406
407 /* task file registers for pata and sata */
408 unsigned long io_ports[IDE_NR_PORTS];
409 unsigned long sata_scr[SATA_NR_PORTS];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700410
Linus Torvalds1da177e2005-04-16 15:20:36 -0700411 ide_drive_t drives[MAX_DRIVES]; /* drive info */
412
413 u8 major; /* our major number */
414 u8 index; /* 0 for ide0; 1 for ide1; ... */
415 u8 channel; /* for dual-port chips: 0=primary, 1=secondary */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700416 u8 bus_state; /* power state of the IDE bus */
417
David Millere95d9c62007-10-22 02:09:00 -0700418 u32 host_flags;
Bartlomiej Zolnierkiewicz6a824c92007-07-20 01:11:58 +0200419
Bartlomiej Zolnierkiewicz4099d142007-07-20 01:11:59 +0200420 u8 pio_mask;
421
Linus Torvalds1da177e2005-04-16 15:20:36 -0700422 u8 ultra_mask;
423 u8 mwdma_mask;
424 u8 swdma_mask;
425
Bartlomiej Zolnierkiewicz49521f92007-07-09 23:17:58 +0200426 u8 cbl; /* cable type */
427
Linus Torvalds1da177e2005-04-16 15:20:36 -0700428 hwif_chipset_t chipset; /* sub-module for tuning.. */
429
Bartlomiej Zolnierkiewicz36501652008-02-01 23:09:31 +0100430 struct device *dev;
431
Bartlomiej Zolnierkiewicz85620432007-10-20 00:32:34 +0200432 const struct ide_port_info *cds; /* chipset device struct */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700433
Bartlomiej Zolnierkiewicz18e181f2007-10-20 00:32:32 +0200434 ide_ack_intr_t *ack_intr;
435
Linus Torvalds1da177e2005-04-16 15:20:36 -0700436 void (*rw_disk)(ide_drive_t *, struct request *);
437
438#if 0
439 ide_hwif_ops_t *hwifops;
440#else
Bartlomiej Zolnierkiewicz1f2cf8b2008-02-02 19:56:40 +0100441 /* host specific initialization of devices on a port */
442 void (*port_init_devs)(struct hwif_s *);
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +0200443 /* routine to program host for PIO mode */
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +0200444 void (*set_pio_mode)(ide_drive_t *, const u8);
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +0200445 /* routine to program host for DMA mode */
446 void (*set_dma_mode)(ide_drive_t *, const u8);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700447 /* tweaks hardware to select drive */
448 void (*selectproc)(ide_drive_t *);
449 /* chipset polling based on hba specifics */
450 int (*reset_poll)(ide_drive_t *);
451 /* chipset specific changes to default for device-hba resets */
452 void (*pre_reset)(ide_drive_t *);
453 /* routine to reset controller after a disk reset */
454 void (*resetproc)(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700455 /* special host masking for drive selection */
456 void (*maskproc)(ide_drive_t *, int);
457 /* check host's drive quirk list */
Bartlomiej Zolnierkiewiczf01393e2008-01-26 20:13:03 +0100458 void (*quirkproc)(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700459#endif
Sergei Shtylyovb4e44362007-10-11 23:53:58 +0200460 u8 (*mdma_filter)(ide_drive_t *);
Bartlomiej Zolnierkiewicz2d5eaa62007-05-10 00:01:08 +0200461 u8 (*udma_filter)(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700462
Bartlomiej Zolnierkiewiczbfa14b42008-02-02 19:56:31 +0100463 u8 (*cable_detect)(struct hwif_s *);
464
Linus Torvalds1da177e2005-04-16 15:20:36 -0700465 void (*ata_input_data)(ide_drive_t *, void *, u32);
466 void (*ata_output_data)(ide_drive_t *, void *, u32);
467
468 void (*atapi_input_bytes)(ide_drive_t *, void *, u32);
469 void (*atapi_output_bytes)(ide_drive_t *, void *, u32);
470
Bartlomiej Zolnierkiewicz15ce9262008-01-26 20:13:03 +0100471 void (*dma_host_set)(ide_drive_t *, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700472 int (*dma_setup)(ide_drive_t *);
473 void (*dma_exec_cmd)(ide_drive_t *, u8);
474 void (*dma_start)(ide_drive_t *);
475 int (*ide_dma_end)(ide_drive_t *drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700476 int (*ide_dma_test_irq)(ide_drive_t *drive);
Albert Leef0dd8712007-02-17 02:40:21 +0100477 void (*ide_dma_clear_irq)(ide_drive_t *drive);
Sergei Shtylyov841d2a92007-07-09 23:17:54 +0200478 void (*dma_lost_irq)(ide_drive_t *drive);
Sergei Shtylyovc283f5d2007-07-09 23:17:54 +0200479 void (*dma_timeout)(ide_drive_t *drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700480
481 void (*OUTB)(u8 addr, unsigned long port);
482 void (*OUTBSYNC)(ide_drive_t *drive, u8 addr, unsigned long port);
483 void (*OUTW)(u16 addr, unsigned long port);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700484 void (*OUTSW)(unsigned long port, void *addr, u32 count);
485 void (*OUTSL)(unsigned long port, void *addr, u32 count);
486
487 u8 (*INB)(unsigned long port);
488 u16 (*INW)(unsigned long port);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700489 void (*INSW)(unsigned long port, void *addr, u32 count);
490 void (*INSL)(unsigned long port, void *addr, u32 count);
491
492 /* dma physical region descriptor table (cpu view) */
493 unsigned int *dmatable_cpu;
494 /* dma physical region descriptor table (dma view) */
495 dma_addr_t dmatable_dma;
496 /* Scatter-gather list used to build the above */
497 struct scatterlist *sg_table;
498 int sg_max_nents; /* Maximum number of entries in it */
499 int sg_nents; /* Current number of entries in it */
500 int sg_dma_direction; /* dma transfer direction */
501
502 /* data phase of the active command (currently only valid for PIO/DMA) */
503 int data_phase;
504
505 unsigned int nsect;
506 unsigned int nleft;
Jens Axboe55c16a72007-07-25 08:13:56 +0200507 struct scatterlist *cursg;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700508 unsigned int cursg_ofs;
509
Linus Torvalds1da177e2005-04-16 15:20:36 -0700510 int rqsize; /* max sectors per request */
511 int irq; /* our irq number */
512
Linus Torvalds1da177e2005-04-16 15:20:36 -0700513 unsigned long dma_base; /* base addr for dma ports */
514 unsigned long dma_command; /* dma command register */
515 unsigned long dma_vendor1; /* dma vendor 1 register */
516 unsigned long dma_status; /* dma status register */
517 unsigned long dma_vendor3; /* dma vendor 3 register */
518 unsigned long dma_prdtable; /* actual prd table address */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700519
Linus Torvalds1da177e2005-04-16 15:20:36 -0700520 unsigned long config_data; /* for use by chipset-specific code */
521 unsigned long select_data; /* for use by chipset-specific code */
522
Sergei Shtylylov020e3222006-10-03 01:14:13 -0700523 unsigned long extra_base; /* extra addr for dma ports */
524 unsigned extra_ports; /* number of extra dma ports */
525
Linus Torvalds1da177e2005-04-16 15:20:36 -0700526 unsigned noprobe : 1; /* don't probe for this interface */
527 unsigned present : 1; /* this interface exists */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700528 unsigned serialized : 1; /* serialized all channel operation */
529 unsigned sharing_irq: 1; /* 1 = sharing irq with another hwif */
530 unsigned reset : 1; /* reset after probe */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700531 unsigned sg_mapped : 1; /* sg_table and sg_nents are ready */
Bartlomiej Zolnierkiewicz2ad1e552007-02-17 02:40:25 +0100532 unsigned mmio : 1; /* host uses MMIO */
Bartlomiej Zolnierkiewiczb0343042008-02-02 19:56:45 +0100533 unsigned straight8 : 1; /* Alan's straight 8 check */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700534
Bartlomiej Zolnierkiewiczf74c9142008-04-18 00:46:23 +0200535 struct device gendev;
536 struct device *portdev;
537
Aleksey Makarovf36d4022006-01-09 15:59:27 -0800538 struct completion gendev_rel_comp; /* To deal with device release() */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700539
540 void *hwif_data; /* extra hwif data */
541
542 unsigned dma;
Hannes Reineckee3a59b42007-02-07 18:19:37 +0100543
544#ifdef CONFIG_BLK_DEV_IDEACPI
545 struct ide_acpi_hwif_link *acpidata;
546#endif
Ravikiran G Thirumalai22fc6ec2006-01-08 01:01:27 -0800547} ____cacheline_internodealigned_in_smp ide_hwif_t;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700548
549/*
550 * internal ide interrupt handler type
551 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700552typedef ide_startstop_t (ide_handler_t)(ide_drive_t *);
553typedef int (ide_expiry_t)(ide_drive_t *);
554
Borislav Petkov0eea6452008-02-02 19:56:36 +0100555/* used by ide-cd, ide-floppy, etc. */
556typedef void (xfer_func_t)(ide_drive_t *, void *, u32);
557
Linus Torvalds1da177e2005-04-16 15:20:36 -0700558typedef struct hwgroup_s {
559 /* irq handler, if active */
560 ide_startstop_t (*handler)(ide_drive_t *);
Bartlomiej Zolnierkiewicza6fbb1c2008-02-01 23:09:35 +0100561
Linus Torvalds1da177e2005-04-16 15:20:36 -0700562 /* BOOL: protects all fields below */
563 volatile int busy;
564 /* BOOL: wake us up on timer expiry */
565 unsigned int sleeping : 1;
566 /* BOOL: polling active & poll_timeout field valid */
567 unsigned int polling : 1;
Alan Cox913759a2006-10-03 01:14:33 -0700568 /* BOOL: in a polling reset situation. Must not trigger another reset yet */
569 unsigned int resetting : 1;
570
Linus Torvalds1da177e2005-04-16 15:20:36 -0700571 /* current drive */
572 ide_drive_t *drive;
573 /* ptr to current hwif in linked-list */
574 ide_hwif_t *hwif;
575
Linus Torvalds1da177e2005-04-16 15:20:36 -0700576 /* current request */
577 struct request *rq;
Bartlomiej Zolnierkiewicza6fbb1c2008-02-01 23:09:35 +0100578
Linus Torvalds1da177e2005-04-16 15:20:36 -0700579 /* failsafe timer */
580 struct timer_list timer;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700581 /* timeout value during long polls */
582 unsigned long poll_timeout;
583 /* queried upon timeouts */
584 int (*expiry)(ide_drive_t *);
Bartlomiej Zolnierkiewicza6fbb1c2008-02-01 23:09:35 +0100585
Suleiman Souhlal23450312007-04-10 22:38:37 +0200586 int req_gen;
587 int req_gen_timer;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700588} ide_hwgroup_t;
589
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200590typedef struct ide_driver_s ide_driver_t;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700591
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200592extern struct mutex ide_setting_mtx;
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200593
594int set_io_32bit(ide_drive_t *, int);
595int set_pio_mode(ide_drive_t *, int);
596int set_using_dma(ide_drive_t *, int);
597
Borislav Petkoveaec3e72008-04-18 00:46:27 +0200598/* ATAPI packet command flags */
599enum {
600 /* set when an error is considered normal - no retry (ide-tape) */
601 PC_FLAG_ABORT = (1 << 0),
602 PC_FLAG_SUPPRESS_ERROR = (1 << 1),
603 PC_FLAG_WAIT_FOR_DSC = (1 << 2),
604 PC_FLAG_DMA_OK = (1 << 3),
605 PC_FLAG_DMA_RECOMMENDED = (1 << 4),
606 PC_FLAG_DMA_IN_PROGRESS = (1 << 5),
607 PC_FLAG_DMA_ERROR = (1 << 6),
608 PC_FLAG_WRITING = (1 << 7),
609 /* command timed out */
610 PC_FLAG_TIMEDOUT = (1 << 8),
611};
612
Borislav Petkov8303b462008-04-18 00:46:26 +0200613struct ide_atapi_pc {
614 /* actual packet bytes */
615 u8 c[12];
616 /* incremented on each retry */
617 int retries;
618 int error;
619
620 /* bytes to transfer */
621 int req_xfer;
622 /* bytes actually transferred */
623 int xferred;
624
625 /* data buffer */
626 u8 *buf;
627 /* current buffer position */
628 u8 *cur_pos;
629 int buf_size;
630 /* missing/available data on the current buffer */
631 int b_count;
632
633 /* the corresponding request */
634 struct request *rq;
635
636 unsigned long flags;
637
638 /*
639 * those are more or less driver-specific and some of them are subject
640 * to change/removal later.
641 */
642 u8 pc_buf[256];
643 void (*idefloppy_callback) (ide_drive_t *);
644 ide_startstop_t (*idetape_callback) (ide_drive_t *);
645
646 /* idetape only */
647 struct idetape_bh *bh;
648 char *b_data;
649
650 /* idescsi only for now */
651 struct scatterlist *sg;
652 unsigned int sg_cnt;
653
654 struct scsi_cmnd *scsi_cmd;
655 void (*done) (struct scsi_cmnd *);
656
657 unsigned long timeout;
658};
659
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200660#ifdef CONFIG_IDE_PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700661/*
662 * configurable drive settings
663 */
664
665#define TYPE_INT 0
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +0200666#define TYPE_BYTE 1
667#define TYPE_SHORT 2
Linus Torvalds1da177e2005-04-16 15:20:36 -0700668
669#define SETTING_READ (1 << 0)
670#define SETTING_WRITE (1 << 1)
671#define SETTING_RW (SETTING_READ | SETTING_WRITE)
672
673typedef int (ide_procset_t)(ide_drive_t *, int);
674typedef struct ide_settings_s {
675 char *name;
676 int rw;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700677 int data_type;
678 int min;
679 int max;
680 int mul_factor;
681 int div_factor;
682 void *data;
683 ide_procset_t *set;
684 int auto_remove;
685 struct ide_settings_s *next;
686} ide_settings_t;
687
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +0200688int ide_add_setting(ide_drive_t *, const char *, int, int, int, int, int, int, void *, ide_procset_t *set);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700689
690/*
691 * /proc/ide interface
692 */
693typedef struct {
694 const char *name;
695 mode_t mode;
696 read_proc_t *read_proc;
697 write_proc_t *write_proc;
698} ide_proc_entry_t;
699
Bartlomiej Zolnierkiewiczecfd80e2007-05-10 00:01:09 +0200700void proc_ide_create(void);
701void proc_ide_destroy(void);
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +0200702void ide_proc_register_port(ide_hwif_t *);
Bartlomiej Zolnierkiewiczd9270a32008-02-02 19:56:43 +0100703void ide_proc_port_register_devices(ide_hwif_t *);
Bartlomiej Zolnierkiewicz5b0c4b32008-04-18 00:46:22 +0200704void ide_proc_unregister_device(ide_drive_t *);
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +0200705void ide_proc_unregister_port(ide_hwif_t *);
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200706void ide_proc_register_driver(ide_drive_t *, ide_driver_t *);
707void ide_proc_unregister_driver(ide_drive_t *, ide_driver_t *);
708
709void ide_add_generic_settings(ide_drive_t *);
710
Linus Torvalds1da177e2005-04-16 15:20:36 -0700711read_proc_t proc_ide_read_capacity;
712read_proc_t proc_ide_read_geometry;
713
714#ifdef CONFIG_BLK_DEV_IDEPCI
715void ide_pci_create_host_proc(const char *, get_info_t *);
716#endif
717
718/*
719 * Standard exit stuff:
720 */
721#define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
722{ \
723 len -= off; \
724 if (len < count) { \
725 *eof = 1; \
726 if (len <= 0) \
727 return 0; \
728 } else \
729 len = count; \
730 *start = page + off; \
731 return len; \
732}
733#else
Bartlomiej Zolnierkiewiczecfd80e2007-05-10 00:01:09 +0200734static inline void proc_ide_create(void) { ; }
735static inline void proc_ide_destroy(void) { ; }
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +0200736static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
Bartlomiej Zolnierkiewiczd9270a32008-02-02 19:56:43 +0100737static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; }
Bartlomiej Zolnierkiewicz5b0c4b32008-04-18 00:46:22 +0200738static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; }
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +0200739static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200740static inline void ide_proc_register_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
741static inline void ide_proc_unregister_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
742static inline void ide_add_generic_settings(ide_drive_t *drive) { ; }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700743#define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
744#endif
745
746/*
747 * Power Management step value (rq->pm->pm_step).
748 *
749 * The step value starts at 0 (ide_pm_state_start_suspend) for a
750 * suspend operation or 1000 (ide_pm_state_start_resume) for a
751 * resume operation.
752 *
753 * For each step, the core calls the subdriver start_power_step() first.
754 * This can return:
755 * - ide_stopped : In this case, the core calls us back again unless
756 * step have been set to ide_power_state_completed.
757 * - ide_started : In this case, the channel is left busy until an
758 * async event (interrupt) occurs.
759 * Typically, start_power_step() will issue a taskfile request with
760 * do_rw_taskfile().
761 *
762 * Upon reception of the interrupt, the core will call complete_power_step()
763 * with the error code if any. This routine should update the step value
764 * and return. It should not start a new request. The core will call
765 * start_power_step for the new step value, unless step have been set to
766 * ide_power_state_completed.
767 *
768 * Subdrivers are expected to define their own additional power
769 * steps from 1..999 for suspend and from 1001..1999 for resume,
770 * other values are reserved for future use.
771 */
772
773enum {
774 ide_pm_state_completed = -1,
775 ide_pm_state_start_suspend = 0,
776 ide_pm_state_start_resume = 1000,
777};
778
779/*
780 * Subdrivers support.
Laurent Riffard4ef3b8f2005-11-18 22:15:40 +0100781 *
782 * The gendriver.owner field should be set to the module owner of this driver.
783 * The gendriver.name field should be set to the name of this driver
Linus Torvalds1da177e2005-04-16 15:20:36 -0700784 */
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200785struct ide_driver_s {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700786 const char *version;
787 u8 media;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700788 unsigned supports_dsc_overlap : 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700789 ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
790 int (*end_request)(ide_drive_t *, int, int);
791 ide_startstop_t (*error)(ide_drive_t *, struct request *rq, u8, u8);
792 ide_startstop_t (*abort)(ide_drive_t *, struct request *rq);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700793 struct device_driver gen_driver;
Russell King4031bbe2006-01-06 11:41:00 +0000794 int (*probe)(ide_drive_t *);
795 void (*remove)(ide_drive_t *);
Lee Trager0d2157f2007-06-08 15:14:30 +0200796 void (*resume)(ide_drive_t *);
Russell King4031bbe2006-01-06 11:41:00 +0000797 void (*shutdown)(ide_drive_t *);
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200798#ifdef CONFIG_IDE_PROC_FS
799 ide_proc_entry_t *proc;
800#endif
801};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700802
Russell King4031bbe2006-01-06 11:41:00 +0000803#define to_ide_driver(drv) container_of(drv, ide_driver_t, gen_driver)
804
Linus Torvalds1da177e2005-04-16 15:20:36 -0700805int generic_ide_ioctl(ide_drive_t *, struct file *, struct block_device *, unsigned, unsigned long);
806
807/*
808 * ide_hwifs[] is the master data structure used to keep track
809 * of just about everything in ide.c. Whenever possible, routines
810 * should be using pointers to a drive (ide_drive_t *) or
811 * pointers to a hwif (ide_hwif_t *), rather than indexing this
812 * structure directly (the allocation/layout may change!).
813 *
814 */
815#ifndef _IDE_C
816extern ide_hwif_t ide_hwifs[]; /* master data repository */
817#endif
818extern int noautodma;
819
820extern int ide_end_request (ide_drive_t *drive, int uptodate, int nrsecs);
Alan Coxdbe217a2006-06-25 05:47:44 -0700821int ide_end_dequeued_request(ide_drive_t *drive, struct request *rq,
822 int uptodate, int nr_sectors);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700823
Linus Torvalds1da177e2005-04-16 15:20:36 -0700824extern void ide_set_handler (ide_drive_t *drive, ide_handler_t *handler, unsigned int timeout, ide_expiry_t *expiry);
825
Bartlomiej Zolnierkiewiczcd2a2d92008-01-25 22:17:06 +0100826void ide_execute_command(ide_drive_t *, u8, ide_handler_t *, unsigned int,
827 ide_expiry_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700828
829ide_startstop_t __ide_error(ide_drive_t *, struct request *, u8, u8);
830
Linus Torvalds1da177e2005-04-16 15:20:36 -0700831ide_startstop_t ide_error (ide_drive_t *drive, const char *msg, byte stat);
832
833ide_startstop_t __ide_abort(ide_drive_t *, struct request *);
834
Linus Torvalds1da177e2005-04-16 15:20:36 -0700835extern ide_startstop_t ide_abort(ide_drive_t *, const char *);
836
837extern void ide_fix_driveid(struct hd_driveid *);
Bartlomiej Zolnierkiewicz01745112007-11-05 21:42:29 +0100838
Linus Torvalds1da177e2005-04-16 15:20:36 -0700839extern void ide_fixstring(u8 *, const int, const int);
840
Bartlomiej Zolnierkiewicz74af21c2007-10-13 17:47:49 +0200841int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700842
Linus Torvalds1da177e2005-04-16 15:20:36 -0700843extern ide_startstop_t ide_do_reset (ide_drive_t *);
844
Linus Torvalds1da177e2005-04-16 15:20:36 -0700845extern void ide_init_drive_cmd (struct request *rq);
846
847/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700848 * "action" parameter type for ide_do_drive_cmd() below.
849 */
850typedef enum {
851 ide_wait, /* insert rq at end of list, and wait for it */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700852 ide_preempt, /* insert rq in front of current request */
853 ide_head_wait, /* insert rq in front of current request and wait for it */
854 ide_end /* insert rq at end of list, but don't wait for it */
855} ide_action_t;
856
Linus Torvalds1da177e2005-04-16 15:20:36 -0700857extern int ide_do_drive_cmd(ide_drive_t *, struct request *, ide_action_t);
858
Linus Torvalds1da177e2005-04-16 15:20:36 -0700859extern void ide_end_drive_cmd(ide_drive_t *, u8, u8);
860
Bartlomiej Zolnierkiewicz9e422372008-01-25 22:17:07 +0100861enum {
862 IDE_TFLAG_LBA48 = (1 << 0),
863 IDE_TFLAG_NO_SELECT_MASK = (1 << 1),
Bartlomiej Zolnierkiewicz74095a92008-01-25 22:17:07 +0100864 IDE_TFLAG_FLAGGED = (1 << 2),
865 IDE_TFLAG_OUT_DATA = (1 << 3),
866 IDE_TFLAG_OUT_HOB_FEATURE = (1 << 4),
867 IDE_TFLAG_OUT_HOB_NSECT = (1 << 5),
868 IDE_TFLAG_OUT_HOB_LBAL = (1 << 6),
869 IDE_TFLAG_OUT_HOB_LBAM = (1 << 7),
870 IDE_TFLAG_OUT_HOB_LBAH = (1 << 8),
871 IDE_TFLAG_OUT_HOB = IDE_TFLAG_OUT_HOB_FEATURE |
872 IDE_TFLAG_OUT_HOB_NSECT |
873 IDE_TFLAG_OUT_HOB_LBAL |
874 IDE_TFLAG_OUT_HOB_LBAM |
875 IDE_TFLAG_OUT_HOB_LBAH,
876 IDE_TFLAG_OUT_FEATURE = (1 << 9),
877 IDE_TFLAG_OUT_NSECT = (1 << 10),
878 IDE_TFLAG_OUT_LBAL = (1 << 11),
879 IDE_TFLAG_OUT_LBAM = (1 << 12),
880 IDE_TFLAG_OUT_LBAH = (1 << 13),
881 IDE_TFLAG_OUT_TF = IDE_TFLAG_OUT_FEATURE |
882 IDE_TFLAG_OUT_NSECT |
883 IDE_TFLAG_OUT_LBAL |
884 IDE_TFLAG_OUT_LBAM |
885 IDE_TFLAG_OUT_LBAH,
Bartlomiej Zolnierkiewicz807e35d2008-01-25 22:17:10 +0100886 IDE_TFLAG_OUT_DEVICE = (1 << 14),
Bartlomiej Zolnierkiewiczac026ff2008-01-25 22:17:14 +0100887 IDE_TFLAG_WRITE = (1 << 15),
Bartlomiej Zolnierkiewicz866e2ec2008-01-25 22:17:14 +0100888 IDE_TFLAG_FLAGGED_SET_IN_FLAGS = (1 << 16),
889 IDE_TFLAG_IN_DATA = (1 << 17),
Bartlomiej Zolnierkiewicz57d73662008-01-25 22:17:16 +0100890 IDE_TFLAG_CUSTOM_HANDLER = (1 << 18),
Bartlomiej Zolnierkiewiczf6e29e32008-01-25 22:17:16 +0100891 IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 19),
Bartlomiej Zolnierkiewiczc2b57cd2008-01-25 22:17:17 +0100892 IDE_TFLAG_IN_HOB_FEATURE = (1 << 20),
893 IDE_TFLAG_IN_HOB_NSECT = (1 << 21),
894 IDE_TFLAG_IN_HOB_LBAL = (1 << 22),
895 IDE_TFLAG_IN_HOB_LBAM = (1 << 23),
896 IDE_TFLAG_IN_HOB_LBAH = (1 << 24),
897 IDE_TFLAG_IN_HOB_LBA = IDE_TFLAG_IN_HOB_LBAL |
898 IDE_TFLAG_IN_HOB_LBAM |
899 IDE_TFLAG_IN_HOB_LBAH,
900 IDE_TFLAG_IN_HOB = IDE_TFLAG_IN_HOB_FEATURE |
901 IDE_TFLAG_IN_HOB_NSECT |
902 IDE_TFLAG_IN_HOB_LBA,
903 IDE_TFLAG_IN_NSECT = (1 << 25),
904 IDE_TFLAG_IN_LBAL = (1 << 26),
905 IDE_TFLAG_IN_LBAM = (1 << 27),
906 IDE_TFLAG_IN_LBAH = (1 << 28),
907 IDE_TFLAG_IN_LBA = IDE_TFLAG_IN_LBAL |
908 IDE_TFLAG_IN_LBAM |
909 IDE_TFLAG_IN_LBAH,
910 IDE_TFLAG_IN_TF = IDE_TFLAG_IN_NSECT |
911 IDE_TFLAG_IN_LBA,
912 IDE_TFLAG_IN_DEVICE = (1 << 29),
Bartlomiej Zolnierkiewicz657cc1a2008-01-26 20:13:10 +0100913 IDE_TFLAG_HOB = IDE_TFLAG_OUT_HOB |
914 IDE_TFLAG_IN_HOB,
915 IDE_TFLAG_TF = IDE_TFLAG_OUT_TF |
916 IDE_TFLAG_IN_TF,
917 IDE_TFLAG_DEVICE = IDE_TFLAG_OUT_DEVICE |
918 IDE_TFLAG_IN_DEVICE,
Tejun Heo35cf2b92008-01-26 20:13:10 +0100919 /* force 16-bit I/O operations */
920 IDE_TFLAG_IO_16BIT = (1 << 30),
Bartlomiej Zolnierkiewicz395d8ef2008-02-11 00:32:14 +0100921 /* ide_task_t was allocated using kmalloc() */
922 IDE_TFLAG_DYN = (1 << 31),
Bartlomiej Zolnierkiewicz9e422372008-01-25 22:17:07 +0100923};
924
Bartlomiej Zolnierkiewicz650d8412008-01-25 22:17:06 +0100925struct ide_taskfile {
926 u8 hob_data; /* 0: high data byte (for TASKFILE IOCTL) */
927
928 u8 hob_feature; /* 1-5: additional data to support LBA48 */
929 u8 hob_nsect;
930 u8 hob_lbal;
931 u8 hob_lbam;
932 u8 hob_lbah;
933
934 u8 data; /* 6: low data byte (for TASKFILE IOCTL) */
935
936 union { /*  7: */
937 u8 error; /* read: error */
938 u8 feature; /* write: feature */
939 };
940
941 u8 nsect; /* 8: number of sectors */
942 u8 lbal; /* 9: LBA low */
943 u8 lbam; /* 10: LBA mid */
944 u8 lbah; /* 11: LBA high */
945
946 u8 device; /* 12: device select */
947
948 union { /* 13: */
949 u8 status; /*  read: status  */
950 u8 command; /* write: command */
951 };
952};
953
Linus Torvalds1da177e2005-04-16 15:20:36 -0700954typedef struct ide_task_s {
Bartlomiej Zolnierkiewicz650d8412008-01-25 22:17:06 +0100955 union {
956 struct ide_taskfile tf;
957 u8 tf_array[14];
958 };
Bartlomiej Zolnierkiewicz866e2ec2008-01-25 22:17:14 +0100959 u32 tf_flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700960 int data_phase;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700961 struct request *rq; /* copy of request */
962 void *special; /* valid_t generally */
963} ide_task_t;
964
Bartlomiej Zolnierkiewicz9e422372008-01-25 22:17:07 +0100965void ide_tf_load(ide_drive_t *, ide_task_t *);
Bartlomiej Zolnierkiewiczc2b57cd2008-01-25 22:17:17 +0100966void ide_tf_read(ide_drive_t *, ide_task_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700967
968extern void SELECT_DRIVE(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700969extern void SELECT_MASK(ide_drive_t *, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700970
971extern int drive_is_ready(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700972
Bartlomiej Zolnierkiewicz2fc57382008-01-25 22:17:13 +0100973void ide_pktcmd_tf_load(ide_drive_t *, u32, u16, u8);
974
Bartlomiej Zolnierkiewiczf6e29e32008-01-25 22:17:16 +0100975ide_startstop_t do_rw_taskfile(ide_drive_t *, ide_task_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700976
Tejun Heo4d7a9842008-01-26 20:13:11 +0100977void task_end_request(ide_drive_t *, struct request *, u8);
978
Bartlomiej Zolnierkiewiczac026ff2008-01-25 22:17:14 +0100979int ide_raw_taskfile(ide_drive_t *, ide_task_t *, u8 *, u16);
Bartlomiej Zolnierkiewicz9a3c49b2008-01-25 22:17:07 +0100980int ide_no_data_taskfile(ide_drive_t *, ide_task_t *);
981
Linus Torvalds1da177e2005-04-16 15:20:36 -0700982int ide_taskfile_ioctl(ide_drive_t *, unsigned int, unsigned long);
983int ide_cmd_ioctl(ide_drive_t *, unsigned int, unsigned long);
984int ide_task_ioctl(ide_drive_t *, unsigned int, unsigned long);
985
986extern int system_bus_clock(void);
987
988extern int ide_driveid_update(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700989extern int ide_config_drive_speed(ide_drive_t *, u8);
990extern u8 eighty_ninty_three (ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700991extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *);
992
993extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
994
Linus Torvalds1da177e2005-04-16 15:20:36 -0700995extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
996
997extern int ide_spin_wait_hwgroup(ide_drive_t *);
998extern void ide_timer_expiry(unsigned long);
David Howells7d12e782006-10-05 14:55:46 +0100999extern irqreturn_t ide_intr(int irq, void *dev_id);
Jens Axboe165125e2007-07-24 09:28:11 +02001000extern void do_ide_request(struct request_queue *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001001
1002void ide_init_disk(struct gendisk *, ide_drive_t *);
1003
Bartlomiej Zolnierkiewicz6d208b32007-05-10 00:01:11 +02001004#ifdef CONFIG_IDEPCI_PCIBUS_ORDER
Greg Kroah-Hartman725522b2007-01-15 11:50:02 -08001005extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name);
1006#define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
Bartlomiej Zolnierkiewicz6d208b32007-05-10 00:01:11 +02001007#else
1008#define ide_pci_register_driver(d) pci_register_driver(d)
1009#endif
1010
Bartlomiej Zolnierkiewicz85620432007-10-20 00:32:34 +02001011void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *, int, u8 *);
1012void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001013
Sergei Shtylyov8e882ba2008-02-11 00:32:14 +01001014#ifdef CONFIG_BLK_DEV_IDEDMA_PCI
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +01001015void ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *);
1016#else
1017static inline void ide_hwif_setup_dma(ide_hwif_t *hwif,
1018 const struct ide_port_info *d) { }
1019#endif
1020
Linus Torvalds1da177e2005-04-16 15:20:36 -07001021extern void default_hwif_iops(ide_hwif_t *);
1022extern void default_hwif_mmiops(ide_hwif_t *);
1023extern void default_hwif_transport(ide_hwif_t *);
1024
Linus Torvalds1da177e2005-04-16 15:20:36 -07001025typedef struct ide_pci_enablebit_s {
1026 u8 reg; /* byte pci reg holding the enable-bit */
1027 u8 mask; /* mask to isolate the enable-bit */
1028 u8 val; /* value of masked reg when "enabled" */
1029} ide_pci_enablebit_t;
1030
1031enum {
1032 /* Uses ISA control ports not PCI ones. */
Bartlomiej Zolnierkiewicza5d8c5c2007-07-20 01:11:55 +02001033 IDE_HFLAG_ISA_PORTS = (1 << 0),
Bartlomiej Zolnierkiewicz6a824c92007-07-20 01:11:58 +02001034 /* single port device */
Bartlomiej Zolnierkiewicza5d8c5c2007-07-20 01:11:55 +02001035 IDE_HFLAG_SINGLE = (1 << 1),
Bartlomiej Zolnierkiewicz6a824c92007-07-20 01:11:58 +02001036 /* don't use legacy PIO blacklist */
1037 IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2),
1038 /* don't use conservative PIO "downgrade" */
1039 IDE_HFLAG_PIO_NO_DOWNGRADE = (1 << 3),
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +02001040 /* use PIO8/9 for prefetch off/on */
1041 IDE_HFLAG_ABUSE_PREFETCH = (1 << 4),
1042 /* use PIO6/7 for fast-devsel off/on */
1043 IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5),
1044 /* use 100-102 and 200-202 PIO values to set DMA modes */
1045 IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6),
Bartlomiej Zolnierkiewiczaedea592007-10-13 17:47:50 +02001046 /*
1047 * keep DMA setting when programming PIO mode, may be used only
1048 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1049 */
1050 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7),
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +02001051 /* program host for the transfer mode after programming device */
1052 IDE_HFLAG_POST_SET_MODE = (1 << 8),
1053 /* don't program host/device for the transfer mode ("smart" hosts) */
1054 IDE_HFLAG_NO_SET_MODE = (1 << 9),
Bartlomiej Zolnierkiewicz0ae2e172007-10-16 22:29:55 +02001055 /* trust BIOS for programming chipset/device for DMA */
1056 IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10),
Bartlomiej Zolnierkiewicz807b90d2008-02-02 19:56:40 +01001057 /* host uses VDMA (tied with IDE_HFLAG_CS5520 for now) */
Bartlomiej Zolnierkiewicz0ae2e172007-10-16 22:29:55 +02001058 IDE_HFLAG_VDMA = (1 << 11),
Bartlomiej Zolnierkiewicz33c10022007-10-19 00:30:06 +02001059 /* ATAPI DMA is unsupported */
1060 IDE_HFLAG_NO_ATAPI_DMA = (1 << 12),
Bartlomiej Zolnierkiewicz7cab14a2007-10-19 00:30:06 +02001061 /* set if host is a "bootable" controller */
1062 IDE_HFLAG_BOOTABLE = (1 << 13),
Bartlomiej Zolnierkiewicz47b68782007-10-19 00:30:06 +02001063 /* host doesn't support DMA */
1064 IDE_HFLAG_NO_DMA = (1 << 14),
1065 /* check if host is PCI IDE device before allowing DMA */
1066 IDE_HFLAG_NO_AUTODMA = (1 << 15),
Bartlomiej Zolnierkiewicz807b90d2008-02-02 19:56:40 +01001067 /* don't autotune PIO */
1068 IDE_HFLAG_NO_AUTOTUNE = (1 << 16),
Bartlomiej Zolnierkiewicz9ffcf362007-10-19 00:30:07 +02001069 /* host is CS5510/CS5520 */
Bartlomiej Zolnierkiewicz807b90d2008-02-02 19:56:40 +01001070 IDE_HFLAG_CS5520 = IDE_HFLAG_VDMA,
Bartlomiej Zolnierkiewicz238e4f12007-10-19 00:30:07 +02001071 /* no LBA48 */
1072 IDE_HFLAG_NO_LBA48 = (1 << 17),
1073 /* no LBA48 DMA */
1074 IDE_HFLAG_NO_LBA48_DMA = (1 << 18),
Bartlomiej Zolnierkiewiczed67b922007-10-19 00:30:10 +02001075 /* data FIFO is cleared by an error */
1076 IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19),
Bartlomiej Zolnierkiewicz1c513612007-10-19 00:30:10 +02001077 /* serialize ports */
1078 IDE_HFLAG_SERIALIZE = (1 << 20),
Bartlomiej Zolnierkiewicz3985ee32007-10-19 00:30:11 +02001079 /* use legacy IRQs */
1080 IDE_HFLAG_LEGACY_IRQS = (1 << 21),
Bartlomiej Zolnierkiewicz8acf28c2007-10-20 00:32:30 +02001081 /* force use of legacy IRQs */
1082 IDE_HFLAG_FORCE_LEGACY_IRQS = (1 << 22),
Bartlomiej Zolnierkiewicz272a3702007-10-20 00:32:30 +02001083 /* limit LBA48 requests to 256 sectors */
1084 IDE_HFLAG_RQSIZE_256 = (1 << 23),
Bartlomiej Zolnierkiewiczcaea7602007-10-20 00:32:30 +02001085 /* use 32-bit I/O ops */
1086 IDE_HFLAG_IO_32BIT = (1 << 24),
1087 /* unmask IRQs */
1088 IDE_HFLAG_UNMASK_IRQS = (1 << 25),
Bartlomiej Zolnierkiewicz4db90a12008-01-25 22:17:18 +01001089 IDE_HFLAG_ABUSE_SET_DMA_MODE = (1 << 26),
Bartlomiej Zolnierkiewicz8704de82008-01-26 20:13:00 +01001090 /* host is CY82C693 */
1091 IDE_HFLAG_CY82C693 = (1 << 27),
Bartlomiej Zolnierkiewicz8ac2b42a2008-02-01 23:09:30 +01001092 /* force host out of "simplex" mode */
1093 IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28),
Bartlomiej Zolnierkiewicz4166c192008-02-01 23:09:30 +01001094 /* DSC overlap is unsupported */
1095 IDE_HFLAG_NO_DSC = (1 << 29),
Bartlomiej Zolnierkiewicz807b90d2008-02-02 19:56:40 +01001096 /* never use 32-bit I/O ops */
1097 IDE_HFLAG_NO_IO_32BIT = (1 << 30),
1098 /* never unmask IRQs */
1099 IDE_HFLAG_NO_UNMASK_IRQS = (1 << 31),
Linus Torvalds1da177e2005-04-16 15:20:36 -07001100};
1101
Bartlomiej Zolnierkiewicz7cab14a2007-10-19 00:30:06 +02001102#ifdef CONFIG_BLK_DEV_OFFBOARD
1103# define IDE_HFLAG_OFF_BOARD IDE_HFLAG_BOOTABLE
1104#else
1105# define IDE_HFLAG_OFF_BOARD 0
1106#endif
1107
Bartlomiej Zolnierkiewicz039788e2007-10-20 00:32:34 +02001108struct ide_port_info {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001109 char *name;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001110 unsigned int (*init_chipset)(struct pci_dev *, const char *);
1111 void (*init_iops)(ide_hwif_t *);
1112 void (*init_hwif)(ide_hwif_t *);
1113 void (*init_dma)(ide_hwif_t *, unsigned long);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001114 ide_pci_enablebit_t enablebits[2];
Bartlomiej Zolnierkiewicz528a5722007-10-20 00:32:30 +02001115 hwif_chipset_t chipset;
Bartlomiej Zolnierkiewicz3071a9d2008-01-25 22:17:17 +01001116 u8 extra;
Bartlomiej Zolnierkiewicz9ffcf362007-10-19 00:30:07 +02001117 u32 host_flags;
Bartlomiej Zolnierkiewicz4099d142007-07-20 01:11:59 +02001118 u8 pio_mask;
Bartlomiej Zolnierkiewicz5f8b6c32007-10-19 00:30:07 +02001119 u8 swdma_mask;
1120 u8 mwdma_mask;
Bartlomiej Zolnierkiewicz18137202007-05-10 00:01:07 +02001121 u8 udma_mask;
Bartlomiej Zolnierkiewicz039788e2007-10-20 00:32:34 +02001122};
Linus Torvalds1da177e2005-04-16 15:20:36 -07001123
Bartlomiej Zolnierkiewicz85620432007-10-20 00:32:34 +02001124int ide_setup_pci_device(struct pci_dev *, const struct ide_port_info *);
1125int ide_setup_pci_devices(struct pci_dev *, struct pci_dev *, const struct ide_port_info *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001126
1127void ide_map_sg(ide_drive_t *, struct request *);
1128void ide_init_sg_cmd(ide_drive_t *, struct request *);
1129
1130#define BAD_DMA_DRIVE 0
1131#define GOOD_DMA_DRIVE 1
1132
Jordan Crouse65e5f2e32005-12-15 02:16:18 +01001133struct drive_list_entry {
1134 const char *id_model;
1135 const char *id_firmware;
1136};
1137
1138int ide_in_drive_list(struct hd_driveid *, const struct drive_list_entry *);
Bartlomiej Zolnierkiewicza5b7e702007-08-20 22:42:56 +02001139
1140#ifdef CONFIG_BLK_DEV_IDEDMA
Linus Torvalds1da177e2005-04-16 15:20:36 -07001141int __ide_dma_bad_drive(ide_drive_t *);
Bartlomiej Zolnierkiewicz3ab7efe2007-12-12 23:31:58 +01001142int ide_id_dma_bug(ide_drive_t *);
Bartlomiej Zolnierkiewicz7670df732007-10-11 23:53:59 +02001143
1144u8 ide_find_dma_mode(ide_drive_t *, u8);
1145
1146static inline u8 ide_max_dma_mode(ide_drive_t *drive)
1147{
1148 return ide_find_dma_mode(drive, XFER_UDMA_6);
1149}
1150
Bartlomiej Zolnierkiewicz4a546e02008-01-26 20:13:01 +01001151void ide_dma_off_quietly(ide_drive_t *);
Bartlomiej Zolnierkiewicz7469aaf2007-02-17 02:40:26 +01001152void ide_dma_off(ide_drive_t *);
Bartlomiej Zolnierkiewicz4a546e02008-01-26 20:13:01 +01001153void ide_dma_on(ide_drive_t *);
Bartlomiej Zolnierkiewicz3608b5d2007-02-17 02:40:26 +01001154int ide_set_dma(ide_drive_t *);
Bartlomiej Zolnierkiewicz578cfa02008-02-02 19:56:47 +01001155void ide_check_dma_crc(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001156ide_startstop_t ide_dma_intr(ide_drive_t *);
1157
Bartlomiej Zolnierkiewicz062f9f02008-02-01 23:09:32 +01001158int ide_build_sglist(ide_drive_t *, struct request *);
1159void ide_destroy_dmatable(ide_drive_t *);
1160
Sergei Shtylyov8e882ba2008-02-11 00:32:14 +01001161#ifdef CONFIG_BLK_DEV_IDEDMA_SFF
Linus Torvalds1da177e2005-04-16 15:20:36 -07001162extern int ide_build_dmatable(ide_drive_t *, struct request *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001163extern int ide_release_dma(ide_hwif_t *);
Sergei Shtylyovecf327962008-02-01 23:09:30 +01001164extern void ide_setup_dma(ide_hwif_t *, unsigned long);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001165
Bartlomiej Zolnierkiewicz15ce9262008-01-26 20:13:03 +01001166void ide_dma_host_set(ide_drive_t *, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001167extern int ide_dma_setup(ide_drive_t *);
1168extern void ide_dma_start(ide_drive_t *);
1169extern int __ide_dma_end(ide_drive_t *);
Sergei Shtylyov841d2a92007-07-09 23:17:54 +02001170extern void ide_dma_lost_irq(ide_drive_t *);
Sergei Shtylyovc283f5d2007-07-09 23:17:54 +02001171extern void ide_dma_timeout(ide_drive_t *);
Sergei Shtylyov8e882ba2008-02-11 00:32:14 +01001172#endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001173
1174#else
Bartlomiej Zolnierkiewicz3ab7efe2007-12-12 23:31:58 +01001175static inline int ide_id_dma_bug(ide_drive_t *drive) { return 0; }
Bartlomiej Zolnierkiewicz7670df732007-10-11 23:53:59 +02001176static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
Bartlomiej Zolnierkiewicz2d5eaa62007-05-10 00:01:08 +02001177static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
Bartlomiej Zolnierkiewicz4a546e02008-01-26 20:13:01 +01001178static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; }
Bartlomiej Zolnierkiewicz7469aaf2007-02-17 02:40:26 +01001179static inline void ide_dma_off(ide_drive_t *drive) { ; }
Bartlomiej Zolnierkiewicz4a546e02008-01-26 20:13:01 +01001180static inline void ide_dma_on(ide_drive_t *drive) { ; }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001181static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
Bartlomiej Zolnierkiewicz3608b5d2007-02-17 02:40:26 +01001182static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
Bartlomiej Zolnierkiewicz578cfa02008-02-02 19:56:47 +01001183static inline void ide_check_dma_crc(ide_drive_t *drive) { ; }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001184#endif /* CONFIG_BLK_DEV_IDEDMA */
1185
Sergei Shtylyov8e882ba2008-02-11 00:32:14 +01001186#ifndef CONFIG_BLK_DEV_IDEDMA_SFF
Linus Torvalds1da177e2005-04-16 15:20:36 -07001187static inline void ide_release_dma(ide_hwif_t *drive) {;}
1188#endif
1189
Hannes Reineckee3a59b42007-02-07 18:19:37 +01001190#ifdef CONFIG_BLK_DEV_IDEACPI
1191extern int ide_acpi_exec_tfs(ide_drive_t *drive);
1192extern void ide_acpi_get_timing(ide_hwif_t *hwif);
1193extern void ide_acpi_push_timing(ide_hwif_t *hwif);
1194extern void ide_acpi_init(ide_hwif_t *hwif);
Bartlomiej Zolnierkiewiczeafd88a2008-02-02 19:56:43 +01001195void ide_acpi_port_init_devices(ide_hwif_t *);
Shaohua Li5e321322007-10-11 23:53:58 +02001196extern void ide_acpi_set_state(ide_hwif_t *hwif, int on);
Hannes Reineckee3a59b42007-02-07 18:19:37 +01001197#else
1198static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; }
1199static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; }
1200static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; }
1201static inline void ide_acpi_init(ide_hwif_t *hwif) { ; }
Bartlomiej Zolnierkiewiczeafd88a2008-02-02 19:56:43 +01001202static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; }
Shaohua Li5e321322007-10-11 23:53:58 +02001203static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
Hannes Reineckee3a59b42007-02-07 18:19:37 +01001204#endif
1205
Bartlomiej Zolnierkiewiczfbd13082008-02-01 23:09:36 +01001206void ide_remove_port_from_hwgroup(ide_hwif_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001207extern int ide_hwif_request_regions(ide_hwif_t *hwif);
1208extern void ide_hwif_release_regions(ide_hwif_t* hwif);
Bartlomiej Zolnierkiewicz93de00f2008-04-18 00:46:24 +02001209void ide_unregister(unsigned int);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001210
1211void ide_register_region(struct gendisk *);
1212void ide_unregister_region(struct gendisk *);
1213
Bartlomiej Zolnierkiewiczf01393e2008-01-26 20:13:03 +01001214void ide_undecoded_slave(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001215
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +01001216int ide_device_add_all(u8 *idx, const struct ide_port_info *);
1217int ide_device_add(u8 idx[4], const struct ide_port_info *);
Bartlomiej Zolnierkiewicz2dde7862008-04-18 00:46:23 +02001218void ide_port_unregister_devices(ide_hwif_t *);
1219void ide_port_scan(ide_hwif_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001220
1221static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
1222{
1223 return hwif->hwif_data;
1224}
1225
1226static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
1227{
1228 hwif->hwif_data = data;
1229}
1230
Bartlomiej Zolnierkiewicz3ab7efe2007-12-12 23:31:58 +01001231const char *ide_xfer_verbose(u8 mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001232extern void ide_toggle_bounce(ide_drive_t *drive, int on);
1233extern int ide_set_xfer_rate(ide_drive_t *drive, u8 rate);
1234
Bartlomiej Zolnierkiewicz22298332007-07-20 01:11:55 +02001235static inline int ide_dev_has_iordy(struct hd_driveid *id)
1236{
1237 return ((id->field_valid & 2) && (id->capability & 8)) ? 1 : 0;
1238}
1239
Sergei Shtylyov6c3c22f2007-09-11 22:28:36 +02001240static inline int ide_dev_is_sata(struct hd_driveid *id)
1241{
1242 /*
1243 * See if word 93 is 0 AND drive is at least ATA-5 compatible
1244 * verifying that word 80 by casting it to a signed type --
1245 * this trick allows us to filter out the reserved values of
1246 * 0x0000 and 0xffff along with the earlier ATA revisions...
1247 */
1248 if (id->hw_config == 0 && (short)id->major_rev_num >= 0x0020)
1249 return 1;
1250 return 0;
1251}
1252
Bartlomiej Zolnierkiewicza5016332008-01-25 22:17:17 +01001253u64 ide_get_lba_addr(struct ide_taskfile *, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001254u8 ide_dump_status(ide_drive_t *, const char *, u8);
1255
1256typedef struct ide_pio_timings_s {
1257 int setup_time; /* Address setup (ns) minimum */
1258 int active_time; /* Active pulse (ns) minimum */
Sergei Shtylyov81d368e2007-03-03 17:48:53 +01001259 int cycle_time; /* Cycle time (ns) minimum = */
1260 /* active + recovery (+ setup for some chips) */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001261} ide_pio_timings_t;
1262
Bartlomiej Zolnierkiewicz7dd00082007-07-20 01:11:56 +02001263unsigned int ide_pio_cycle_time(ide_drive_t *, u8);
Bartlomiej Zolnierkiewicz21347582007-07-20 01:11:58 +02001264u8 ide_get_best_pio_mode(ide_drive_t *, u8, u8);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001265extern const ide_pio_timings_t ide_pio_timings[6];
1266
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +02001267int ide_set_pio_mode(ide_drive_t *, u8);
1268int ide_set_dma_mode(ide_drive_t *, u8);
1269
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +02001270void ide_set_pio(ide_drive_t *, u8);
1271
1272static inline void ide_set_max_pio(ide_drive_t *drive)
1273{
1274 ide_set_pio(drive, 255);
1275}
Linus Torvalds1da177e2005-04-16 15:20:36 -07001276
1277extern spinlock_t ide_lock;
Matthias Kaehlckeef298882007-07-09 23:17:55 +02001278extern struct mutex ide_cfg_mtx;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001279/*
1280 * Structure locking:
1281 *
Matthias Kaehlckeef298882007-07-09 23:17:55 +02001282 * ide_cfg_mtx and ide_lock together protect changes to
Linus Torvalds1da177e2005-04-16 15:20:36 -07001283 * ide_hwif_t->{next,hwgroup}
1284 * ide_drive_t->next
1285 *
1286 * ide_hwgroup_t->busy: ide_lock
1287 * ide_hwgroup_t->hwif: ide_lock
1288 * ide_hwif_t->mate: constant, no locking
1289 * ide_drive_t->hwif: constant, no locking
1290 */
1291
Ingo Molnar366c7f52006-07-03 00:25:25 -07001292#define local_irq_set(flags) do { local_save_flags((flags)); local_irq_enable_in_hardirq(); } while (0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001293
1294extern struct bus_type ide_bus_type;
Bartlomiej Zolnierkiewiczf74c9142008-04-18 00:46:23 +02001295extern struct class *ide_port_class;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001296
1297/* check if CACHE FLUSH (EXT) command is supported (bits defined in ATA-6) */
1298#define ide_id_has_flush_cache(id) ((id)->cfs_enable_2 & 0x3000)
1299
1300/* some Maxtor disks have bit 13 defined incorrectly so check bit 10 too */
1301#define ide_id_has_flush_cache_ext(id) \
1302 (((id)->cfs_enable_2 & 0x2400) == 0x2400)
1303
Bartlomiej Zolnierkiewicz7b9f25b2008-02-01 23:09:28 +01001304static inline void ide_dump_identify(u8 *id)
1305{
1306 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0);
1307}
1308
Christoph Lameter86b37862005-08-09 19:59:21 -07001309static inline int hwif_to_node(ide_hwif_t *hwif)
1310{
Bartlomiej Zolnierkiewicz36501652008-02-01 23:09:31 +01001311 struct pci_dev *dev = to_pci_dev(hwif->dev);
Andi Kleen1f07e982008-02-11 01:35:20 +01001312 return hwif->dev ? pcibus_to_node(dev->bus) : -1;
Christoph Lameter86b37862005-08-09 19:59:21 -07001313}
1314
Benjamin Herrenschmidt1b678342007-10-19 00:30:05 +02001315static inline ide_drive_t *ide_get_paired_drive(ide_drive_t *drive)
1316{
1317 ide_hwif_t *hwif = HWIF(drive);
1318
1319 return &hwif->drives[(drive->dn ^ 1) & 1];
1320}
1321
Bartlomiej Zolnierkiewicz81ca6912008-01-26 20:13:08 +01001322static inline void ide_set_irq(ide_drive_t *drive, int on)
1323{
Bartlomiej Zolnierkiewicz23579a22008-04-18 00:46:26 +02001324 ide_hwif_t *hwif = drive->hwif;
1325
1326 hwif->OUTB(drive->ctl | (on ? 0 : 2),
1327 hwif->io_ports[IDE_CONTROL_OFFSET]);
Bartlomiej Zolnierkiewicz81ca6912008-01-26 20:13:08 +01001328}
1329
Bartlomiej Zolnierkiewiczc47137a2008-02-06 02:57:51 +01001330static inline u8 ide_read_status(ide_drive_t *drive)
1331{
1332 ide_hwif_t *hwif = drive->hwif;
1333
1334 return hwif->INB(hwif->io_ports[IDE_STATUS_OFFSET]);
1335}
1336
1337static inline u8 ide_read_altstatus(ide_drive_t *drive)
1338{
1339 ide_hwif_t *hwif = drive->hwif;
1340
1341 return hwif->INB(hwif->io_ports[IDE_CONTROL_OFFSET]);
1342}
1343
Bartlomiej Zolnierkiewicz64a57fe2008-02-06 02:57:51 +01001344static inline u8 ide_read_error(ide_drive_t *drive)
1345{
1346 ide_hwif_t *hwif = drive->hwif;
1347
1348 return hwif->INB(hwif->io_ports[IDE_ERROR_OFFSET]);
1349}
1350
Bartlomiej Zolnierkiewicz7616c0a2008-04-18 00:46:26 +02001351/*
1352 * Too bad. The drive wants to send us data which we are not ready to accept.
1353 * Just throw it away.
1354 */
1355static inline void ide_atapi_discard_data(ide_drive_t *drive, unsigned bcount)
1356{
1357 ide_hwif_t *hwif = drive->hwif;
1358
1359 /* FIXME: use ->atapi_input_bytes */
1360 while (bcount--)
1361 (void)hwif->INB(hwif->io_ports[IDE_DATA_OFFSET]);
1362}
1363
1364static inline void ide_atapi_write_zeros(ide_drive_t *drive, unsigned bcount)
1365{
1366 ide_hwif_t *hwif = drive->hwif;
1367
1368 /* FIXME: use ->atapi_output_bytes */
1369 while (bcount--)
1370 hwif->OUTB(0, hwif->io_ports[IDE_DATA_OFFSET]);
1371}
1372
Linus Torvalds1da177e2005-04-16 15:20:36 -07001373#endif /* _IDE_H */